The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 26, 1983
Filed:
Aug. 21, 1981
Dennis M Riggs, Simpsonville, SC (US);
Edward L Harvey, Watertown, MA (US);
The United States of America as represented by the Secretary of the Army, Washington, DC (US);
Abstract
Bulk pieces of graphite bonded with a graphitizable binder comprising a lid crystalline component of pitch, which softens at about 240.degree. C. and becomes very fluid at about 300.degree. C. to about 500.degree. C. The bonded graphite pieces appear as a monolithic material even under 1000.times. magnification. The bonding is effected under vacuum or in an inert atmosphere at temperatures of from about 700.degree. C. to about 3000.degree. C., usually about 1000.degree. C. to about 1500.degree. C., under pressure of from about 20 psi to about 1000 psi applied in a direction normal to the bonding surface.